Kolos is actually one of the more 'bluffed' cards in the game. People expect you to go all out so you can 1-pill Kolos and end up at a huge pillz gap. Oh, and if your opp's Kolos plays first and you have a damage reducer, just throw them out. Your opponent may expect it but it saves you from a 1HKO and the move tastes sweeter if your opp goes all-out and wastes their pills on a thwarted 1HKO.